The annual interest rate of loans for 3-5 years (including 5 years) announced by the People's Bank of China is 4.75%, calculated at the benchmark interest rate. Under the condition of constant interest rate, the repayment method is equal principal and interest, the total interest is 3 1 353.68 yuan, and the monthly repayment amount is 4,689.23 yuan. The average method is adopted, and the total interest is 30 1 829 yuan, which is repaid in the first month.

Suppose it is the repayment method of equal principal and interest;

Annual interest rate =3.25%, monthly interest rate = annual interest rate/12 = 0.27083%;

Formula: monthly repayment amount = loan amount * monthly interest rate/1-( 1+ monthly interest rate)-repayment months.

Monthly repayment amount = 250000 * 0.27083%/1-(1+0.27083%)-60

Monthly repayment amount = 4520.00 yuan

Extended data:

Suppose the borrower obtains a personal housing loan of 200,000 yuan from the bank, with a loan term of 20 years and an annual interest rate of 4.2%, and pays the principal and interest on a monthly basis. According to the above formula, the monthly repayment of principal and interest is 1233.5438+04 yuan.

The above results only give the sum of the principal and interest payable each month, so it is necessary to decompose this sum of principal and interest. Still on the basis of the above example, one month is one installment, the balance of the first loan is 200,000 yuan, the interest payable is 700 yuan (200,000× 4.2%/12), the principal is 533. 14 yuan, and the bank loan is still 19466.86 yuan; The interest payable in the second phase is (199466.86× 4.2%/12).

Baidu Encyclopedia-Equal principal and interest